/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassCommands.h
template<typename... TOthers> struct FMassCommandAddFragmentInstances : public [FMassBatchedEntityCommand](API\Plugins\MassEntity\FMassBatchedEntityCommand)
UE::Mass::TMult...
Fragments
FMassFragmentBi...
FragmentsAffected